Nonlocal quantum cloning via quantum dots trapped in distant cavities

doi:10.1088/1674-1056/21/5/050304

中国物理B ›› 2012, Vol. 21 ›› Issue (5): 50304-050304.doi: 10.1088/1674-1056/21/5/050304

Nonlocal quantum cloning via quantum dots trapped in distant cavities

于涛,朱爱东,张寿

Department of Physics, College of Science, Yanbian University, Yanji 133002, China

收稿日期:2011-11-02 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11165015) and the Nature Science Foundation of Jilin Province, China (Grant No. 201115226).

Nonlocal quantum cloning via quantum dots trapped in distant cavities

Yu Tao(于涛), Zhu Ai-Dong(朱爱东)^†, and Zhang Shou(张寿)

Department of Physics, College of Science, Yanbian University, Yanji 133002, China

Received:2011-11-02 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11165015) and the Nature Science Foundation of Jilin Province, China (Grant No. 201115226).

摘要/Abstract

摘要： A scheme for implementing nonlocal quantum cloning via quantum dots trapped in cavities is proposed. By modulating the parameters of the system, the optimal 1→2 universal quantum cloning machine, 1→2 phase-covariant cloning machine, and 1→3 economical phase-covariant cloning machine are constructed. The present scheme, which is attainable with current technology, saves two qubits compared with previous cloning machines.

关键词: quantum cloning, quantum dots, cavity quantum electrodynamics

Abstract: A scheme for implementing nonlocal quantum cloning via quantum dots trapped in cavities is proposed. By modulating the parameters of the system, the optimal 1→2 universal quantum cloning machine, 1→2 phase-covariant cloning machine, and 1→3 economical phase-covariant cloning machine are constructed. The present scheme, which is attainable with current technology, saves two qubits compared with previous cloning machines.

Key words: quantum cloning, quantum dots, cavity quantum electrodynamics

中图分类号: (Quantum information)

03.67.-a

03.67.Hk (Quantum communication) 42.50.Ex (Optical implementations of quantum information processing and transfer)

于涛,朱爱东,张寿. Nonlocal quantum cloning via quantum dots trapped in distant cavities[J]. 中国物理B, 2012, 21(5): 50304-050304.

Yu Tao(于涛), Zhu Ai-Dong(朱爱东), and Zhang Shou(张寿) . Nonlocal quantum cloning via quantum dots trapped in distant cavities[J]. Chin. Phys. B, 2012, 21(5): 50304-050304.

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Nonlocal quantum cloning via quantum dots trapped in distant cavities

Nonlocal quantum cloning via quantum dots trapped in distant cavities

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